These are chat archives for camperbot/bonfire-check-for-palindromes

8th
Sep 2015
Joshua S.
@smartfornoreason
Sep 08 2015 20:48
hint
CamperBot
@camperbot
Sep 08 2015 20:48

hint [1/8]

## :construction: After this are possible spoiler hints.

Make sure you've tried to hard to solve it yourself before proceeding. :construction:

type hint for next hint :pencil: [Contribute at the FCC Wiki]

Joshua S.
@smartfornoreason
Sep 08 2015 20:48
hint
CamperBot
@camperbot
Sep 08 2015 20:48

hint [2/8]

# Explanation:

You have to check if the string you get as an input is a palindrome and return true if it is, and false otherwise.

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Joshua S.
@smartfornoreason
Sep 08 2015 20:48
hint
CamperBot
@camperbot
Sep 08 2015 20:48

hint [3/8]

Hint: 1

You may use regular expressions (RegExp) to remove unwanted characters from the string.

type hint for next hint :pencil: [Contribute at the FCC Wiki]

Joshua S.
@smartfornoreason
Sep 08 2015 20:48
hint
CamperBot
@camperbot
Sep 08 2015 20:48

hint [4/8]

Hint: 2

You may use Array.prototype.split and Array.prototype.join methods or for loop.

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Joshua S.
@smartfornoreason
Sep 08 2015 20:48
hint
CamperBot
@camperbot
Sep 08 2015 20:48

hint [5/8]

Hint: 3

You may lowercase the string using String.prototype.toLowerCase.

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Joshua S.
@smartfornoreason
Sep 08 2015 20:48
hint
CamperBot
@camperbot
Sep 08 2015 20:48

hint [6/8]

Spoiler Alert!

687474703a2f2f7777772e796f75726472756d2e636f6d2f796f75726472756d2f696d616765732f323030372f31302f31302f7265645f7761726e696e675f7369676e5f322e676966.gif

Solution ahead!

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Joshua S.
@smartfornoreason
Sep 08 2015 20:49
hint
CamperBot
@camperbot
Sep 08 2015 20:49

hint [7/8]

First

function palindrome(str) {
  var normalizedStr = str.replace(/[\W_]/g, '').toLowerCase();
  var reversedStr = normalizedStr.split('').reverse().join('');
  return normalizedStr === reversedStr;
}

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Joshua S.
@smartfornoreason
Sep 08 2015 20:49
hint
CamperBot
@camperbot
Sep 08 2015 20:49

hint [8/8]

Second

function palindrome(str) {
  str = str.toLowerCase().replace(/[\W_]/g, '');
  for(var i = 0, len = str.length - 1; i < len/2; i++) {
    if(str[i] !== str[len-i]) {
      return false;
    }
  }
  return true;
}

Code Explanation:

We use regular expressions to replace any uppercase letter into a lowercase. Then we check if the string is the same as the reversed string using split() to split the original string by characters, then reverse and then join it back together.

Credits:

If you found this page useful, you can give thanks by copying and pasting this on the main chat: Thanks @Rafase282 @abhisekp

type hint for next hint :pencil: [Contribute at the FCC Wiki]

Joshua S.
@smartfornoreason
Sep 08 2015 20:49
hint
CamperBot
@camperbot
Sep 08 2015 20:49
These hints depend on people like you! Please add to this :point_right: Bonfire's Wiki Hints Page
Joshua S.
@smartfornoreason
Sep 08 2015 20:49
hint
CamperBot
@camperbot
Sep 08 2015 20:49

hint [1/8]

## :construction: After this are possible spoiler hints.

Make sure you've tried to hard to solve it yourself before proceeding. :construction:

type hint for next hint :pencil: [Contribute at the FCC Wiki]

Joshua S.
@smartfornoreason
Sep 08 2015 20:49
hint
CamperBot
@camperbot
Sep 08 2015 20:49

hint [2/8]

# Explanation:

You have to check if the string you get as an input is a palindrome and return true if it is, and false otherwise.

type hint for next hint :pencil: [Contribute at the FCC Wiki]

Joshua S.
@smartfornoreason
Sep 08 2015 20:49
hint
CamperBot
@camperbot
Sep 08 2015 20:49

hint [3/8]

Hint: 1

You may use regular expressions (RegExp) to remove unwanted characters from the string.

type hint for next hint :pencil: [Contribute at the FCC Wiki]